sysdeps/unix/sysv/linux/gettimeofday.c

   1 /* Copyright (C) 2015-2019 Free Software Foundation, Inc.
   2
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <sys/time.h>
  21
  22 #undef __gettimeofday
  23
  24 #ifdef HAVE_GETTIMEOFDAY_VSYSCALL
  25 # define HAVE_VSYSCALL
  26 #endif
  27 #include <sysdep-vdso.h>
  28
  29 /* Get the current time of day and timezone information,
  30    putting it into *tv and *tz.  If tz is null, *tz is not filled.
  31    Returns 0 on success, -1 on errors.  */
  32 int
  33 __gettimeofday (struct timeval *tv, struct timezone *tz)
  34 {
  35   return INLINE_VSYSCALL (gettimeofday, 2, tv, tz);
  36 }
  37 libc_hidden_def (__gettimeofday)
  38 weak_alias (__gettimeofday, gettimeofday)
  39 libc_hidden_weak (gettimeofday)